MySQL5.6/5.7/8.0版本授权用户远程连接

　　MySQL5.6版本

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'IDENTIFIED BY '123456' WITH GRANT OPTION;

　　MySQL5.7版本

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'IDENTIFIED BY '123456';

mysql> flush privileges;

　　MySQL8.0版本 (好像不能使用root用户，待测试。。。)

　　1）创建用户

mysql>create user chenadmin@'%' identified  by 'Chenadmin0.';

　　2）授权示例

mysql>grant all privileges on *.* to chenadmin@'%' with grant option;

　　3）刷新权限

mysql>flush privileges;

　　4）修改远程连接用户的加密规则

mysql>ALTER USER 'chenadmin'@'%' IDENTIFIED WITH mysql_native_password BY 'Chenadmin0.';

　　OK，搞定 ！